I have a couple of music stores and factories and have the right resourses but there is just one thing, why aren't i not selling guitars or recorders???? 
Production problems
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Please, give us your player id or your firmname.
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You don't have enough semi-finished goods to produce your guitars.
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but i have enough steel in my warehouse.
and what about the recorders that seem to not want to be made? -
And you don't have enough wooden boards to produce recorders and guitars.
And then you sell wooden boards in the property market.